Triangular radiant



y 1952 J. L. RAULSTON 2,598,602

TRIANGULAR RADIANT Filed Aug. 1949 IN VEN TOR. J. L. RAULSTON ATTORNEY Patented May 27, 1952 U N IT ED S I 'IRIANGULAR RADIANT Applieation August 4, 1349, Se fiaL-N o:'- 198.449

3 Claims.

This invention relates to. comfort heating;"and more particularly to (heaters employingjreiractory elements maintained at a telatiyelyjhigh temperature or incande'scent'b'y. the combustion of a mixture of gas and air over the surface of the same.

Heretofore, numerous jburners "and radiants which include refractory partsi'hayeb'een emplayed, and much in the *Way'o'f, effort and' expense has "been 'don'ein an attempt to perfect radiant heaters- Radiants', have been' employed" some of which were relatively'flat or'rectangular in'cross section while others were of rectangular cross-section. These radiants' have 'been supp1ied"- with gas from a burner'h'aving 'holes'along --the f-ront edge of the radiant so that the gas can flow up- Wardly over the radiant surface and by burning maintain the radiant at white-heat or-incandescent.

It is an object of thejinvention toimprovethe efiiciency of a radiant heater by-increasing the heat output obtainedirom' theconsumption of a definite amount ofgaseonsumed.

Further objects and-advantages of: the invention will be apparent from' the following specification takenin 1conjunction: with the: accompanying drawingsg whereinz Fig. 1 is' a. front elevation :of .ax'radiant in accordance with thetpresenthnvention;

Fig. 2, a'section onithe"-lines2i2 of Fig. 1;

Fig. 3, a section through one of the radiants on the line 3-3 of Fig. 2';-'and Fig. 4, a top plan View of one end of the-burner.

Briefly stated, the inventionpomprises aheater triangular cross'section;'andsupported with their lower ends over a gas burner of spacedindepndent projections withcentralrgas openings; The projections are arranged in two group'syithe first in a triangular. mannertoz-supply gasaalong the front angularly disposed edges-bf the radiant and the second group of projections arranged in a similar triangular orvarra'ngement behind the first projections so that gas may flow upwardly over a pair of corresponding-1y arranged'vertical surfaces having spaced horizontally disposed conical projections for distributing the combustible gas over additional radiant surfaces for producing a more thorough mixing of such gas with air to improve combustion and the efficiency of the heating device.

With continued reference to the drawings a modern type of space heater is disclosed having a base It] supported on front and rear legs H .142 and l2 the. front..;legs. being. toppe d;by;grna- -mental caps I3- (A-housi g lA-is pro 1 triangular radiants I 5,.a .pairoi guard ra employed fonpreventing aqoidental conta 5 the radiants I-5 which are .fragile and; whenhot =willcause burns if .contacted by. n tl ;n .;-Q

bustible'at or below.;white heat. *Eachradiant is iormed. of -a;.holl0w;;QlQ ated M fireprootceramic hodylot. substantially triangulareross-section including ifront walls! 5. nd a dear-wall IL -As will be. apparent iromganegamina-tion of Fig. 2 oitthe. drawin eachJadat is c-r -suficientmeight that.the..u1;vper..surface l8 thereoiwillbesnugl ireceived beneath-the horizontally disposed lower-Ledge; of the; top; Qf, the

housing I4.

These radiants are mounted; abovegorifices through which gas is-permitted to .flow upwardly over the inner surfaces .of .the. frontiwalls oithe radiant and the outer. and. inner. surfaces of the V '-'---rear wall of theradiant sothat. combustion imay takeplace andiheat emitted.intothepcontiguous ---area.

- :In order to improve .the capacity. and QfiiGiQ Y 251 ofthe heater" and toitprovide .for a. morezfiven -distributionof -heatiover awider; are/than is I possible fwith conventional .heaters, .& instead of v 5 'a si'ngle fiat rearwallaa, pair of..;ar.ched.;silrf,aces

Y I I extendin iinwardly from .the;.-rear isun ace et thewall." l5 .arerprovidednn.'Ifhese. -archedurfacesterminate imavertical-line. I-.9.'.and .atte h side ofjthis verticailine.on the -:rear:-,;wa1 1s 1 are :prdvided small conical-..projections.20.;WhiQh: end f orwa'rdly. and theifrontwalls lfiiarel pross vided i.:-with tcorresponding ..rear.wardly .spaced rejections 2|.

he .frontwalls are oftopennwork construction acilitatin g -the.-circulation of the. gaseous; mixi i tureupwardly over.th'e sameland dueito. themheat 40' of--;such= irontliwalls v.combustiozr materially ----facilitated'.=vil hesefront walls. I Garedisposedsub- I statritiallyatright. angles.

s Inorder .to-sprovide for. the; admission thereto ofathe necessary ashore-combustion, qaihollow 'ielongated :burnerl zcastinglorsmanifold. 22 provided; having .on its interiorinwardly; extending fianges 23- whichiorm .azlong'itudinal gas slot 24.

Through the upper portion of this burner extend longitudinally spaced groups of burner ports 25 and 26, each port being defined by an independent annular raised portion to facilitate increased air circulation around and between the ports. Additional ports 21 serve merely to cause the flame to travel from one end of the burner to the other when it is initially lighted.

scribed in the specification but only as Each of the groups of ports 25 and 26 is composed of aligned ports in V formation with the apex of one V located forwardly of the other and. with the legs of the forward V disposed substantially at right angles, while the legs of the other V are disposed at a greater angle. The surfaces about the ports preferably are inclined downwardly to facilitate air movement to such ports.

It will be readily understood that with a burner of the above described construction a more intimate mixing of the gas and air is accomplished and in actual experience the efficiency is improved approximately 20%.

In operation the burners heat the radiants l to the desired temperature at which they radiate heat outwardly to the space in which the heater is located. By reason of the V-shaped front walls l6 of the radiant the heat is radiated diverge'ntly to the plane of the heater, and due to the number and! spacing of the radiants an even heat is radiated over a wider arc than with a conventional heater having 'a fiat radiant member at its front. The V-shape of the arched surfaces ll of the rear wall ll improves the operating efficiency and uniformity of heating of the radiants,

the rear surface H sending heat rays some of V which pass through the openings in the walls l5 and some of which heat the walls Hi.

It will be obvious to those skilled in the art that various changes may be made in the invention without departing from the spirit and scope thereofand therefore the invention is not limited by that which is shown in the drawing and deindicated in the appended claims. I I

-What is claimed is:

1. A heater comprising a hollow elongated cast- 7 ing providing a manifold having longitudinally spaced groups of burner ports in its upper wall,

each port being defined by an independent annular raised portion to facilitate increased air circulation around and between said ports, each group being composed of two series of ports each arranged in V formation with the apex of one V located forwardly and substantially directly in frontof the other, the legs of the forward V being disposed substantially at right angles to each other while the legs of the other V are disposed at a greater angle, an elongated hollow radiant triangular in cross section mounted over each group of'ports whereby flames and products of combustion will flow over the internal surface of said'radiants, the front walls forming the triangular radiant being disposed substantially at right angles to each other corresponding to the'angle of the front series of ports, such angular walls being of open-work construction and being joined by a triangular member at the top and by a transverse wall at the rear, said transverse wall having a, raised centrally disposed inner surface with side surfaces inclined rearwardly therefrom with spaced substantially conical projections extending outwardly from said surfaces within said radiant, and a series of proiections extending from the inner surface of the front V walls of said radiant toward said conical projections on said rear wall for facilitating the distribution of the combustible mixture of fuel and air.

2. A heater comprisin a hollow elongated burner casting having longitudinally spaced groups of burner ports in its upper wall, each port being defined by an independent annular raised portion to facilitate increased air circulation around and between said ports, each group being composed of two series of ports each arranged in V formation with the apex of one V located forwardly and substantially directly in front of the other, the legs of the forward V being disposed substantially at right angles to each other While the legs of the other V are disposed at a greater angle, an elongated hollow radiant triangular in cross-section mounted over .each group of ports whereby flames and productsof combustion will flow over the surface of said radiants, the front walls forming the triangular radiant being disposed substantially at right angles to each other corresponding to the ing outwardly from said surfaces, and a series surfaces being substantially greater than the angular relationship between thefront walls of said radiant, a plurality of substantially conical spaced projections on said inclined surfaces extending forwardly therefrom, and a plurality of substantially conical spaced projections extending rearwardly from the. inner surfaces of the front walls of said radiant.

JAMES LEONARD :RAULSTON.

REFERENCES CITED The following references are of record in the file of this patent:

V UNITED STATES PATENTS Number Name Date 1,564,362 Loepfe Dec. 8, 1925 1,594,744 Moore 'Aug. 3, 1926 1,669,503 Antrim May 15, 1928 2,156,423 Bailey May 2, 1939 FOREIGN PATENTS Number Country Date Great Britain July 7, 1941 

